<html>
<body>
Reports classes which contain references to one of their subclasses.
Such references may be confusing and violate several rules of object-oriented design.
<p>Example:</p>
<pre><code>
  class Entity {
    // Warning: the class references its subclass
    void compare(SimpleEntity entity) {
      ...
    }
  }
  class SimpleEntity extends Entity {
    ...
  }
</code></pre>
<!-- tooltip end -->
</body>
</html>